W91520N Datasheet, PDF (10/16 Pages) Winbond – TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION

TIMING WAVEFORMS
W91520N SERIES
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
DTMF
OSC.
3
TKID
4
T_IDP
MB
T_PDP
2
T_IDP ^{M B}
T_IDP
2
TKID
T_KRD
T_IDP
TPDP
Low
OSCILLATION
OSCILLATION
Figure 1(a) Normal Dialing Timing Diagram
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
DTMF
OSC.
T_KRD
R/P
TKID
MB
T_PDP
T_IDP ^{M B}
T_IDP
T< T OHD
T_IDP
Low
OSCILLATION
Figure 1(b) Pulse Mode Auto Dialing Timing Diagram
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